"The Vast Universe" PPT courseware on particles and the universe

Description

"The Vast Universe" PPT courseware on particles and the universe

teaching objectives

1. Know the composition of the solar system.

2. Understand the history of human exploration of the universe.

3. Understand the general situation of the universe and the "Big Bang" theory.

1. The concept of the universe

The solar system is an ordinary star in the Milky Way. There are more than 100 billion stars like the sun in the Milky Way.

2. Flying to space

On October 4, 1957, the former Soviet Union launched mankind’s first artificial earth satellite into space.

In 1961, the Soviet Union’s Gagarin entered space in a spacecraft

Apollo 11 astronaut Aldrin steps out of the lunar module in 1969.

On April 24, 1970, my country’s first man-made earth satellite flew into the sky

Class exercises

1. There are ______ big planets in the solar system, and the earth is in the _______ orbit which is farther ______ from the sun.

2. Which of the following statements about the universe is correct ( )

A. The universe is composed of the Milky Way and the solar system

B. The universe is only composed of the Milky Way, and the sun is a member of the Milky Way.

C. There are billions of galaxies in the universe, and the Milky Way is one of them

D. There are only nine planets in the solar system

3. Xiao Ming believes that "light year" is a unit of time. Do you think Xiao Ming's statement is correct? Why?

Answer: No, because light-year represents the distance traveled by light in 1 year, so light-year is the unit of length.

Summary of this lesson

1. The vast universe: The universe is infinite, the sun is just an ordinary star in the Milky Way, and the earth is a planet in the solar system.

2. Human beings continue to explore the universe and have made great progress.

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Update Time: 2024-11-22

This template belongs to Physics courseware Beijing Normal University Ninth Grade Physics Volume 2 industry PPT template

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